From 5f306aff34809fca68bb36476e66552ac241a9c4 Mon Sep 17 00:00:00 2001
From: David Disseldorp <ddiss@suse.de>
Date: Fri, 27 Mar 2020 15:19:53 +0100
Subject: [PATCH 4/5] scsi: target: increase XCOPY I/O size
Git-commit: 5f306aff34809fca68bb36476e66552ac241a9c4
Patch-mainline: v5.7-rc1
References: bsc#1164514
The I/O size is already bound by dev_attrib.hw_max_sectors, so increase the
hardcoded XCOPY_MAX_SECTORS maximum to improve performance against
backstores with high-latency.
Link: https://lore.kernel.org/r/20200327141954.955-5-ddiss@suse.de
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
drivers/target/target_core_xcopy.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/target/target_core_xcopy.h b/drivers/target/target_core_xcopy.h
index 9558974185ea..f1aaf7140798 100644
--- a/drivers/target/target_core_xcopy.h
+++ b/drivers/target/target_core_xcopy.h
@@ -5,7 +5,7 @@
#define XCOPY_TARGET_DESC_LEN 32
#define XCOPY_SEGMENT_DESC_LEN 28
#define XCOPY_NAA_IEEE_REGEX_LEN 16
-#define XCOPY_MAX_SECTORS 1024
+#define XCOPY_MAX_SECTORS 4096
/*
* SPC4r37 6.4.6.1
--
2.16.4